Cultivator.



om oA 9 1 4 2 V. 0 N D* E T N E T A P Nil WR L0 IT MA AW. HT .m W..C. G 3., 5 7, 4 4 7 n@ N APPLIOATION FILED JAN. 2e, 1903 2 SHEETS-SHEET 1.

' N0 MODEL.

wmv'fsses;

. ATTORNEYS.

y l n. uA cA 'ma Nomine PrERs co., PHUroLrrHo.. wAsmNn'ra No. 744,753. PATENTBD Nov. 24, 1903.

G. W. HAMILTON. GULTIVATOR.

v.APPLIICIATON FILED IAN. 26, 1903.

N0 MODEL.

2 SHEETS-SHEET Z.

nu@ l UNITED l STATES Patenta November 24, 1903.

PATENT OFFICE.

CU LTIVATO R.

SPECIFICATION forming part of Letters Patent No. 744,7 53, dated November 24, 1903." Application-filed January 26, 1908. Serial No. 140.536. (No modelJ To a/Z whom it may concern: i

Beit known that I, GAIL-WASHBURN HAM- ILTON, a citizen of the United States, and a resident of Council Bluffs, in the county of Pottawattamie and State of Iowa, have invented a new and Improved Cultivator, of which the following is a`fu`ll, clear, and exact description. l

Myinvention relates t o an improvement in wheeled cultivators, especially that kind adapted to simultaneously cultivate two or more rows.

The purpose of the invention is to provide .means under the convenient control of the driver whereby to impart either side or vertical adjustment to the cultivator-beams or both,'all of the culti/val'or-beams being simultaneously moved to adjusted position.

The invention consists in thevnovel construction and combination of the several parts, as will be hereinafter fully lset forth,

and pointed out in the claims.

Reference is to be had tothe accompanyingl drawings, forming a part of this specification, in which similar character of reference indicate corresponding parts in all the figures.

Figure 1 is a perspective view of the improved machine. Fig. 2 is a longitudinal vertical section taken practically on the'line 2 2A of Fig. 3f Fig. 3 is a plan view of the machine, and Fig. 4 is a detail perspective View of a slight deviation in the construction of the lifting device for the beams.

The axle is provided, as usual, with an upwardly-arched central section and horizontal lower terminal sections l1, upon which lat? ter su pporting-wheels l2 are loosely mounted. The central arched section of the axle 10 is vvprovided with a downwardly-extending yokesection 13, and` frame-beams 14 are forwardly carriedfrom the central section of said axle, one near each end of the central section, as is best shown in Fig. I. vided for the frame-beams 14, and said dropbrace is carried outward and downward from the frame-beams 14, as is shown particularly at 25 in Fig. 1. These side extensions 25 from the drop-brace l5 serve to su pport yoke-arms4 24, extendingforwardly from ,the hub of the supporting-wheels 12, and each yoke-arm 24 terminates at its forward end in-an eye 23, for a purpose to be hereinafter mentioned,

Each frame-beam'14is provided with an out- A dropbrace 15 is provdownward extension 13.

downward from the shorter arm 18 at its center through an eye 20a at the outer end of the bar 20, horizontally extending from the lower central portion of the yoke-section 13, and at the lower end of the chain 2O a swingletree 2l is secured. f

A chain 22 is attachedpto the outer end of each equalzingarm 17, and said chains extend downward through the eyes 23 at the ends of the yoke-arms 24 for the wheels 12, and said yoke-arms are supported at their forward ends by the extensions 25 fromv the drop supporting-braces 15. At the lower extremity of each chain 22 a swingletree 26 is secured, thus completi-ng the construction of the draft apparatus, the equalizing-arms 17 of which have vertical rocking movement upon extensionplS, and in these bearings the vertical members of angle-arms 28 are mounted to turn, the upper horizontal members of which .angle-arms extend horizontally forward and the lower members horizontally rearward. The upper horizontal members of the angle-arms 28are pivotally connected by a bar 29, and at the central portion of the bar 29 the forward end of a lever 30 is'pivotally attached, which lever is fulcrumed upon the Aarched section of the axle 10 and extends backward 1y to within easy reach of the d rivers seat 3l. This seat is usually attached toa support2, extending horizontally from the arched portion of the axle 10 and itsvcentral I desire it to be understood that the angle arms or, supports 28 Vfor the cultivatorbeams maybe differently shaped than shown.A r

An angle-plate 34 is secured tothe outer end of each lower horizontal member of each an'glearm 28, and upon each angle-plate 34'the forward end'of a cultivator-beam 35 is pivoted.

IOO

These cultivator-,beams may be bifurcated, and shovels or shares may be secured thereto in any approved manner.

An upwardly-extending yoke-frame 36 pivotally connects each two opposing adjacent cultivator-beams 35, and each yoke-frame 36 is provided with an upper cross-bar 37, forming in the upper part of each arch or yoke frame 36 a guide-opening 38, as is best shown in Fig. 1. The cultivator-beams 35 are adjusted laterally or sidewise, as is shown by dotted lines in Fig. 3, through the medium of the aforesaid lever 30, and are adjusted vertically, as is shown by dotted lines in Fig.

2, by the following mechanism:

A horizontal rod 40 is journaled in suitable bearings at the rear ends of the frame-beams 14, as is shown in Fig. l, and upwardly-curved members 39 extend rearward from the ends of the rod 40 at right angles to the said rod. These terminal members 39 ot' the rod 40 pass loosely through the guide-openings 38 in the yoke-frames 36 and have their rear ends 4l upwardly bent to prevent the said terminals from leaving the said yoke-frame when the rod 40 is moved in one direction. Projections 41 from the said terminal members 39 serve to prevent the yoke-frames 36 from crowding against the rocking bar or rod 40 when it is operated in an opposite direction. An angle-arm 42 is carried downward and forward from the rocking rod or bar 40, and a spring 43 is secured to said arm and to a cross-bar 33 on the seat-supporting frame 32, whiehpspring serves through said connection to normally hold the cultivator-beams 35 in an upper position in the absence of force in a contrary direction.

If desired, the cross-bars 37 may be omitted from the yoke-frames 36 and substituted by loops 39, formed upon the members 39 of the rod 40, through which loops the upper members of the yoke-frames are passed, as is shown in Fig.. 4.

Means are provided for holding the cultivater-beams in a desired lower position, which means consist of an arm 44, extending rearwardly from the rocking rod or bar 40 at or near its center, and a rack-bar 45, which is pivoted to thefarm 44, having teeth 46 adapted for locking engagement with the cross-bar 33 of the seat-supporting frame, and the said rack-bar 45 is provided with a transverse head 48 at its lower end, extending beneath the drivers seat 3l, so that the rack-bar can be conveniently operated by the feet of the driver to lock the cultivator-beams in a lower position and to'release the rack-bar when it is desired to permit the cultivator-beams to be carried upward by the influence of the spring 43.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. In a cultivator, a wheel-supported frame, a series of angle-arms pivotally mounted on said frame and each arm having at its ends a forwardly-extending member and a rearwardly-extending member,` a link connection between said forwardly-extending members, cultivator beams directly attached to the rearwardly-extending members, and an operating-lever connected with said link.

2. In a cultivator, a wheel-supported frame, angle-arms mounted to turn in the said frame, comprising upper and lower oppositely-disposed end sections and a connecting bodysection, a link connecting the upper sections of the angle-arms, and means for imparting movement to the link, substantially as described.

3. In a cultivator, a wheel-supported frame, duplicate angle-arms pivotally mounted on said frame, each arm having at its ends a forwardly extending member and a rearwardly-extending member, a link connection between the said forwardly-extending members, cultivator-'beams attached to the said rearwardly-extending members, an operating-lever connected with said link, and means substantially as described whereby the said cultivator-beams'may be adjusted vertically.

4. A wheel-supported frame, angle-arms mounted to turn in the said frame, comprising upper and lower oppositely-disposed horizontal end sections and a vertical body-section, a link connecting the upper sections of the said angle-arms, a lever connected with the said link, cultivator-beams pivotally attached to the lower members of the said angle-arms, a lifting device connected with all of the said cultivator-beams, and means for locking the said lifting device in positions to hold the cultivator-beams raised or lowered, as and for the purpose described.

5. In acultivator, a wheel-supported frame, angle-arms mounted to turn upon the said frame, each angle-arm comprising a vertical body-section and horizontal end sections extending therefrom, links connected with the angle-arms, a lever connected with the said links, cultivator-beams pivotally attached to the angle-arms, yoke-frames connecting adjacent cultivator-beams, a rock-shaft carried by the frames, terminal members for the said rock-shaft in lifting engagement with the said yoke-frames, forwardly and rearwardly extending arms attached to the said rock-shaft, a spring connected with the forwardly-extending arm of the rock-shaft and with a portion of the seat-frame at the rear, a rack-bar pivotally connected with the rearwardly-extending arm of the rock-shaft, provided with a foot-bar, and a keeper carried by the frameV of the said rack-bar, for the purposes set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GAIL WASHBURN HAMILTON.

Witnesses:

JAMES T. HAMILTON, CHARLES F. SNIDER.

IIG 

